$ git clone -n https://src.fedoraproject.org/rpms/jpilot-backup.git /var/lib/mock/f40-build-2237142-53533/root/chroot_tmpdir/scmroot/jpilot-backup
Cloning into '/var/lib/mock/f40-build-2237142-53533/root/chroot_tmpdir/scmroot/jpilot-backup'...
$ git fetch origin 81f23442d37e9862234c786c22b8b371c1d53a51:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jpilot-backup
 * [new ref]         81f23442d37e9862234c786c22b8b371c1d53a51 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81f2344 Fix flatpak build